Increased costs of cooperation help cooperators in the long run v1.0.0

A NetLogo replication of the model presented in the following papers: Smaldino PE, Schank JC, McElreath R (2013) [Increased costs of cooperation help cooperators in the long run](http://www.journals.uchicago.edu/doi/abs/10.1086/669615). *The American Naturalist* 181: 451–463. Smaldino PE (2013) [Cooperation in harsh environments and the emergence of spatial patterns](http://www.sciencedirect.com/science/article/pii/S0960077913000921). *Chaos, Solitons & Fractals* 56: 6–12.
This is a companion discussion topic for the original entry at https://www.comses.net/codebases/5500/releases/1.0.0/